Being 40 or younger is an independent risk factor for relapse in operable breast cancer patients: The Saudi Arabia experience

Table 3 Kaplan-Meier estimates of 5-year disease-free survival in relation to tumor and patient characteristics

Characteristics	Number Patients	5-year Survival Rate	95% CI	P-value
Age				0.0353
≤ 40	288	0.7740	0.7201 – 0.8279
> 40	579	0.8346	0.8007 – 0.8685
Node Status
• Positive	479	0.7667	0.7240 – 0.8094	< 0.0001
• Negative	359	0.8957	0.8608 – 0.9306
Tumor Size
≤ 2	279	0.8534	0.8062 – 0.9006	0.0052
3 – 5	475	0.8205	0.7823 – 0.8587
> 5	113	0.7021	0.6090 – 0.7952
Number of Nodes
0	357	0.8953	0.8604 – 0.9302	< 0.0001
1 – 3	261	0.8057	0.7524 – 0.8590
4 – 10	155	0.7624	0.6850 – 0.8398
> 10	60	0.5553	0.3969 – 0.7137
Stage
I	105	0.8881	0.8220 – 0.9542	0.0252
II	512	0.8307	0.7954 – 0.8660
III	140	0.7531	0.6731 – 0.8331
Grade				0.0109
I	45	0.9750	0.9266 – 1.0000
II	427	0.8290	0.7890 – 0.8690
III	321	0.7681	0.7171 – 0.8191
Histo-pathology
• Infiltrating ductal	780	0.8145	0.7861 – 0.8429	0.2180
• Infiltrating lobular	42	0.8682	0.7404 – 0.9960
Lymphatic/Vascular Invasion	242	0.7458	0.6835 – 0.8081	0.0002
• Both Positive	451	0.8599	0.8232 – 0.8966
• Both Negative
Hormonal Receptor
Status
• ER+ PR+	351	0.8425	0.7960 – 0.8890	0.0069
• ER- PR-	168	0.7942	0.7266 – 0.8618
• ER+ PR-	52	0.7866	0.6688 – 0.9044
• ER- PR+	106	0.7113	0.6000 – 0.8226

ISSN: 1471-2407